Thermosetting compositions are excellent in storage stability, useful as one component thermosetting compositions, give cured products having excellent chemical properties, physical properties and weathering resistance and favorably utilized in coating compositions, ink, adhesive and molded plastics.
The thermosetting compositions comprise a compound having in the molecule two or more hydroxyl groups and/or thiol groups blocked by a vinyl ether compound, a vinyl thioether compound or a heterocyclic compound having a vinyl type double bond and oxygen or sulfur as the hetero atom, a compound having two or more reactive functional groups which can form a chemical bond with the blocked hydroxyl and/or thiol compound by heating and a thermal latent acid catalyst. The blocked hydroxyl and/or thiol group of the first compound and the reactive functional group of the second compound may be comprised in the same molecule.
热固性组合物具有优异的储存稳定性,可用作单组分热固性组合物,固化后的产品具有优异的
化学性质、物理性质和耐候性,可用于涂料组合物、油墨、粘合剂和模塑塑料。
热固性组合物包括一种化合物,其分子中的两个或两个以上羟基和/或
硫醇基团被
乙烯基醚化合物、
乙烯基硫醚化合物或具有
乙烯基双键并以氧或
硫作为杂原子的
杂环化合物阻断;一种化合物,其分子中的两个或两个以上活性官能团可通过加热与被阻断的羟基和/或
硫醇化合物形成
化学键;以及一种热潜伏酸催化剂。第一种化合物的受阻羟基和/或
硫醇基团与第二种化合物的活性官能团可包含在同一分子中。